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arXiv · 2402.15088

Hyperon semileptonic decays in QCD sum rules

Sheng-Qi Zhang·Xuan-Heng Zhang·Cong-Feng Qiao
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Abstract

We investigate the hyperon semileptonic decays within the framework of QCD sum rules. The flavor $ SU(3) $ symmetry breaking effects are analyzed via the relevant form factors and corresponding branching fractions. Employing the $ z $-series parameterization to capture the $ q^2 $ dependence of form factors, we calculate the hyperon semileptonic decay rates and confront them with the recent experimental measurements. Moreover, we calculate as well the non-standard tensor form factors, which involve certain new physics beyond the standard model.

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Sheng-Qi Zhang, Xuan-Heng Zhang, Cong-Feng Qiao. 2024-02-23. Hyperon semileptonic decays in QCD sum rules. https://doi.org/10.1007/jhep06(2024)122

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